JP5134992B2 - Outboard motor - Google Patents

Description

  In the present invention, an engine is mounted on an upper part of a casing that is supported by a hull and extends vertically, and an engine cover that covers the engine includes a lower cover that is fixed to the casing, and a first coupling surface along a single plane. And a linear material lead-out portion that leads out the linear material from within the engine cover and is integrally connected to the lower cover near one of the left and right side walls of the lower cover. The present invention relates to an outboard motor comprising a case portion that projects forward from the front wall of the main body and a lid member that is coupled to the case portion at a second coupling surface that is disposed below the first coupling surface.

The engine cover is composed of a lower cover fixed to the casing and an upper cover coupled to the lower cover, and a linear material lead-out portion for leading the linear material from the engine cover projects forward from the front wall of the lower cover. An outboard motor is known from US Pat.
Japanese Patent Laid-Open No. 11-245891

  The one disclosed in Patent Document 1 has a configuration in which a drawer portion that is integrally connected to the entire circumference protrudes from the lower cover. However, a throttle cable, a wire harness, or the like is provided so as to maintain liquid tightness in the drawer portion. In order to insert the linear member, it is desirable to divide the drawer portion into two vertically by a case portion integrated with the lower cover and a lid member coupled to the case from the viewpoint of workability and the like. At this time, if the coupling surface of the case portion and the lid member is disposed below the coupling surface of the lower cover and the upper cover, a minute gap is generated between the lower cover and the lid member, and the minute gap is generated during cruising in rough weather. Therefore, it is necessary to take measures to prevent the ingress of water since there is a possibility that water may enter the engine cover.

  The present invention has been made in view of such circumstances, and a linear material lead-out portion is configured by combining a case portion and a lid member below a connection surface of a lower cover and an upper cover. An object of the present invention is to provide an outboard motor capable of suppressing the intrusion of water into the engine cover as much as possible while avoiding an increase in the number of points.

In order to achieve the above object, an invention according to claim 1 is characterized in that an engine is mounted on an upper part of a casing that is supported by a hull and extends vertically, and an engine cover that covers the engine is fixed to the casing; An upper cover coupled to the lower cover at a first coupling surface along one plane, and a linear material lead-out portion for leading out the linear material from within the engine cover is connected to the lower cover integrally with the lower cover. In the outboard motor comprising a case portion protruding forward from a front wall and a lid member coupled to the case portion at a second coupling surface disposed below the first coupling surface, the lower cover Is integrally provided with a connecting wall portion that connects between the side wall of the lower cover and the outer wall of the case portion located on the inner side of the side wall. An extension wall portion that is smoothly connected to the side wall of the lower cover and extends closer to the linear material lead-out portion as it goes forward is located on the front side of the connection wall portion and an outer end portion of the lid member. It is provided integrally so as to cover the minute gap between the lower cover and the lower cover, and the extension wall portion and the connecting wall portion form a water intrusion chamber facing the minute gap, the drainage hole for discharging water of the water entering chamber to the outside, it and which is located so as to be opened to the bottom portion of the water entering chamber.

Note the embodiment of the throttle wire 22, the shift wire 23 and wire 24 corresponds to linear material of the present invention.

According to the present invention , the lower cover is integrally provided with a connecting wall portion that connects between the side wall of the lower cover and the outer wall of the case portion located on the inner side of the side wall. An extension wall portion that is smoothly connected to the side wall of the lower cover and extends closer to the linear material lead-out portion toward the front is located on the front side of the connecting wall portion, and the outer end portion of the lid member and the lower cover Are formed integrally so as to cover the minute gap between them from the outside, and the extension wall portion and the connecting wall portion form a water intrusion chamber facing the minute gap, and the lower cover is further infiltrated with water. A drain hole for discharging indoor water to the outside is provided so as to open to the bottom of the water intrusion chamber, so the engine cover can be removed from the minute gap between the outer end of the lid member and the lower cover when sailing in rough weather. Into the inside It is possible to minimize the intrusion of water into the engine cover the water to become so as to receive once with water infiltration chamber. In addition, the extension wall portion and the connecting wall portion that form the water intrusion chamber are provided integrally with the lower cover, and it is possible to minimize the intrusion of water into the engine cover with a simple structure that suppresses an increase in the number of parts. it can.

Since water entering into the water entering chamber is effectively discharged to the outside from the drain hole, not the water from being stored in the water entry chamber and more reliably inhibit the penetration of water into the engine cover can do.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

  1 to 6 show an embodiment of the present invention. FIG. 1 is a side view of an outboard motor, FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. 1, and FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 6, FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4, and FIG. It is line sectional drawing.

  Referring to FIG. 1, an outboard motor 10 includes a stern bracket 13 clamped to the stern of a hull 12 and a casing that is connected to the stern bracket 13 via a swivel shaft 14 so as to be swingable in the left-right direction and extends vertically. 11, the engine E is mounted on the upper portion of the casing 11, and the engine E is covered with the engine cover 15. The rotational power exerted by the engine E is transmitted to the propeller shaft 17 supported at the lower portion of the casing 11 so that the propeller 16 is mounted at the rear end.

  The engine cover 15 is coupled to the lower cover 18 by a lower cover 18 fixed to the upper part of the casing 11 and a first coupling surface 20 along a first plane PL1 that is inclined so as to be in an upper position toward the front. The lower cover 18 and the upper cover 19 are connected to each other by a plurality of lock levers 21.

  Referring to FIGS. 2 and 3 together, the linear material lead-out portion 25 for leading the linear material, for example, the throttle wire 22, the shift wire 23, the electric wire 24, etc., from the inside of the engine cover 15 includes the lower cover 18 and the upper cover 19. The left and right side walls of the lower cover 18 are disposed closer to the right side wall so as to avoid the lock lever 21 provided between the front walls of the engine cover 15 and protrude forward from the front wall of the engine cover 15. The wire 23, the electric wire 24, and the like are led out to the outside through the grommet 26 attached to the linear member lead-out portion 25 in a liquid-tight manner.

  The linear material lead-out portion 25 is integrally connected to the lower cover 18 and protrudes forward from the front wall of the lower cover 18, and is disposed below the first coupling surface 20, and the first plane PL 1. And a lid member 28 coupled to the case portion 27 at a second coupling surface 29 along a second plane PL2 that obliquely intersects with the second plane PL2.

  The right side wall of the case portion 27 is located inward of the right side wall of the lower cover 18, and a connecting wall portion 31 that connects the right side wall of the case portion 27 and the right side wall of the lower cover 18 at a substantially right angle is provided in the lower cover 18. Are integrally provided.

  The lid member 28 is fastened to the case portion 27 with a gasket 30 (see FIG. 2) corresponding to the outer shape interposed between the lid member 28 and the case portion 27. The lid member 28 and the gasket 30 are The first protrusions 28a, 30a that contact the front wall of the lower cover 18 from the inside on the left side of the linear material drawing portion 25 and the lower cover 18 so as to overlap the connecting wall portion 31 on the right side of the linear material drawing portion 25. The second protrusions 28b and 30b that protrude to the inner surface side of the right side wall are integrally provided.

  A gasket 32 is interposed between the lower cover 18 and the upper cover 19 constituting the engine cover 15 except for the linear material lead-out portion 25, and the gasket 32 is fitted to the upper cover 19 side. A flat sealing surface 33 is formed on the upper surface of the lower cover 18 except for the case portion 27 so as to contact the gasket 32. A seal member (not shown) is interposed between the upper cover 19 and the lid member 28.

  By the way, since the second coupling surface 29 is below the first coupling surface 20, a part of the lid member 28 is located below the first coupling surface 20, and at that portion, between the lid member 28 and the lower cover 18. There is no seal member, and even if the lid member 28 is brought into contact with the lower cover 18 as much as possible, it is inevitable that a minute gap is generated between the lid member 28 and the lower cover 18.

  Since the first protrusion 28a of the lid member 28 is in contact with the front wall of the lower cover 18 from the inside on the left side of the linear material drawing portion 25, the linear material drawing portion 25 and the engine cover are arranged on the left side of the linear material drawing portion 25. The gap formed between 15 is a labyrinth, and entry of water into the engine cover 15 is prevented as much as possible. On the other hand, since the second protrusion 28b of the lid member 28 abuts the right side wall of the lower cover 18 from the inside on the right side of the linear material drawer portion 25, the lid member is formed on the right side of the linear material drawer portion 25 in this structure. There is a possibility that water may enter the engine cover 15 through a gap formed between the second protrusion 28 b of the 28 and the right side wall of the lower cover 18.

  Therefore, the lower cover 18 is integrally formed with an extension wall portion 18a that is smoothly connected to the right side wall of the lower cover 18 and extends as close as possible to the linear member drawing portion 25 so as to be positioned in front of the connecting wall portion 31. The lower cover 18 is provided with a water intrusion chamber 34 in which the front and rear walls are defined by the connecting wall portion 31 and the extension wall portion 18a that are spaced apart from each other in the front-rear direction. Further, the lower cover 18 has a drain hole 35 for discharging the water in the water intrusion chamber 34 to the outside so as to open to the bottom of the water intrusion chamber 34. Provided.

  4 to 6, the upper cover 19 of the engine cover 15 is provided with an intake port 38 opened to the rear side, and an intake chamber 39 disposed above the engine E communicates with the intake port 38. Formed.

  The intake chamber 39 includes an upper cover 19 of the engine cover 15, an engine room 40 that accommodates the engine E, and an inner cover 41 that is attached to the upper cover 19 from the inside so as to partition the intake chamber 39. Is formed.

  The inner cover 41 is opposed to the upper inner surface of the upper cover 19 and is connected to the upper inner surface of the upper cover 19 with a rear edge portion and both side edge portions connected to the bottom plate portion 41a and above the front edge of the bottom plate portion 41a. A pair of cylinders that rise upward from the bottom plate portion 41a by forming a front wall portion 41b that is connected to the upper inner surface of the upper cover 19 and passage holes 42 and 43 that allow communication between the intake chamber 39 and the engine room 40. The bottom plate portion 41a is fastened to the upper cover 19 below the air inlet 38 by the screw member 44, and is integrally formed with the portions 41c and 41d. The front wall is fastened to a pair of mounting bosses 45 provided integrally with the inner surface of the upper cover 19 with screw members 46. 41b upper middle is fastened to the upper inner surface of the upper cover 19 by a screw member 47.

  Both the cylinder portions 41c and 41d are arranged side by side so that water that has entered the intake chamber 39 from the intake port 38 passes between the cylinder portions 41c and 41d. A pair of discharge holes 48, 48 for discharging water divided into left and right when hitting the front wall portion 41 b are formed on the left and right sides of the upper cover 19 through the front left and right in the intake chamber 39.

  Moreover, the width D in the left-right direction of the intake port 38 is set to be smaller than the distance L between the outer ends of the two cylinder portions 41c, 41d in the left-right direction, and the intake port of the both cylinder portions 41c, 41d The side walls 41ca and 41da facing the surface 38 are formed so as to be inclined so as to approach each other toward the front.

  The bottom plate portion 41a is formed so as to be inclined upward from the air inlet 38 toward the front wall portion 41b, and the front wall portion 41b is formed so as to be inclined forward and bent upward.

  Next, the operation of this embodiment will be described. The engine cover 15 covering the engine E is composed of a lower cover 18 fixed to the casing 11 and an upper cover 19 coupled to the lower cover 18 at the first coupling surface 20. A linear material lead-out portion 25 for leading out the linear material such as the throttle wire 22, the shift wire 23, and the electric wire 24 from the inside of the engine cover 15 is integrally connected to the lower cover 18 and protrudes forward from the front wall of the lower cover 18. And a lid member 28 coupled to the case portion 27 by a second coupling surface 29 disposed below the first coupling surface 20. The lower cover is spaced at the front and back. A water intrusion chamber formed in the lower cover 18 such that the front and rear walls are defined by the connecting wall portion 31 and the extension wall portion 18a provided integrally with the lower wall 18. 4 is disposed on the left and right sides of the linear material lead-out portion 25 on the side where a minute gap is generated between the lid member 28 and the lower cover 18, and therefore from the minute gap between the lid member 28 and the lower cover 18 when traveling in stormy weather. Water that is about to enter the engine cover 15 is temporarily received in the water intrusion chamber 34 so that the ingress of water into the engine cover 15 can be suppressed as much as possible. In addition, the connecting wall portion 31 and the extension wall portion 18a are provided integrally with the lower cover 18, and the penetration of water into the engine cover 15 can be suppressed as much as possible with a simple structure that suppresses the increase in the number of parts.

  Moreover, since the drain hole 35 for discharging the water in the water ingress chamber 34 to the outside is provided in the lower cover 18 so as to open to the bottom of the water ingress chamber 34, the water that has entered the water ingress chamber 34 The water is effectively discharged from the drain hole 35 to the outside, so that water is not stored in the water intrusion chamber 34, and the ingress of water into the engine cover 15 can be more reliably suppressed.

  An intake chamber 39 formed in the upper portion of the engine cover 15 is an internal portion that is attached to the upper cover 19 from the inside so as to partition the upper cover 19 of the engine cover 15 from the engine room 40 and the intake chamber 39. A bottom plate portion 41a formed opposite to the upper inner surface of the upper cover 19 and having a rear edge portion and both side edge portions connected to the upper inner surface of the upper cover 19, and the bottom plate portion. A front wall 41b that rises upward from the front edge of 41a and is connected to the upper inner surface of the upper cover 19 and passage holes 42 and 43 that allow the intake chamber 39 and the engine room 40 to communicate with each other are formed to form the bottom plate portion. A pair of cylindrical portions 41c and 41d rising upward from 41a are integrally formed, and both the cylindrical portions 41c and 41d are connected to the intake air. The water that has entered the intake chamber 39 from 38 is arranged side by side so as to pass between both cylinder portions 41c and 41d, and the water separated into the left and right by striking the front wall portion 41b in the intake chamber 39 A pair of discharge holes 48 for discharging are formed on the left and right sides of the upper cover 19 so as to communicate with the front left and right in the intake chamber 39.

  Therefore, the water that has entered the intake chamber 39 from the intake port 38 reaches the front wall portion 41b through the pair of cylinder portions 41c and 41d, and is divided into left and right by hitting the front wall portion 41b and is discharged to the outside from both the discharge holes 48. Even if a large amount of water enters the intake chamber 39 from the intake port 38 at a time, the water can be efficiently discharged from the discharge holes 48 on both sides. Intrusion can be effectively prevented. Moreover, it is possible to prevent water from entering the engine room 40 with a simple structure that only devise the shape of the inner cover 41 attached to the upper cover 19 of the engine cover 15 from the inside.

  Further, since the width D in the left-right direction of the intake port 38 is set to be smaller than the distance L between the outer ends of the two cylinder portions 41c, 41d in the left-right direction, the water that has entered the intake chamber 39 from the intake port 38 is set. Can be effectively guided between the pair of cylindrical portions 41c and 41d, and the side walls 41ca and 41da facing the intake port 38 of both the cylindrical portions 41c and 41d are inclined so as to approach each other toward the front. Therefore, the water that has entered the intake chamber 39 from the intake port 38 can be effectively guided between the pair of cylinder portions 41c and 41d.

  Moreover, since the bottom plate portion 41a is formed so as to be inclined upward from the intake port 38 toward the front wall portion 41b, the water that has entered the intake chamber 39 is returned to the intake port 38 side so that the intake chamber The drainage from 39 can be performed more effectively.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

It is a side view of an outboard motor. FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is an enlarged view of a main part of FIG. 1 and a sectional view taken along line 4-4 of FIG. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4. FIG. 6 is a sectional view taken along line 6-6 of FIG.

Is 11 ... casing 12 ... hull 15 ... engine cover 18 ... lower cover 18a · · extending long wall portion 19 ... upper cover 20 ... first coupling surface 22 ... linear material Throttle wire 23 ... Linear material shift wire 24 ... Linear material electric wire 25 ... Linear material lead-out part 27 ... Case part 28 ... Cover member 29 ... Second coupling surface 31 ... communicating Yuikabe parts 34 water entering chamber 35 ... drain hole E · · · · engine

Claims (1)

An engine (E) is mounted on an upper part of a casing (11) supported by the hull (12) and extending vertically, and an engine cover (15) covering the engine (E) is fixed to the casing (11). (18) and an upper cover (19) coupled to the lower cover (18) at a first coupling surface (20) along one plane, and a linear member (22, 22) from within the engine cover (15). 23, 24) a linear material lead-out portion (25) that is integrally connected to the lower cover (18) and projects forward from the front wall of the lower cover (18); and the first In the outboard motor configured with the lid member (28) coupled to the case portion (27) at the second coupling surface (29) disposed below the coupling surface (20),
The lower cover (18) is integrally provided with a connecting wall portion (31) for connecting between the side wall of the lower cover (18) and the outer wall of the case portion (27) located inward of the side wall. Provided in
The lower cover (18) has an extended wall portion (18a) smoothly connected to the side wall of the lower cover (18) and extending closer to the linear material lead-out portion (25) toward the front. It is integrally provided so as to cover the minute gap between the outer end portion of the lid member (28) and the lower cover (18) from the outer side on the front side of the wall portion (31). The wall portion (18a) and the connecting wall portion (31) form a water intrusion chamber (34) facing the minute gap,
The lower cover (18) is provided with a drain hole (35) for discharging water in the water intrusion chamber (34) to the outside so as to open to the bottom in the water intrusion chamber (34). Outboard motor characterized by that .

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